mz_crypt_openssl.c:31 3:16: error: field ‘ctx’ has incomplete type

[Polynomial-C]

This happens when trying to compile with -DMZ_OPENSSL=yes against openssl-1.1.1c:

[ 40%] Building C object CMakeFiles/minizip.dir/mz_crypt_openssl.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -DHAVE_BZIP2 -DHAVE_CONFIG_H -DHAVE_IMMINTRIN_H -DHAVE_INTTYPES_H -DHAVE_LIMITS_H -DHAVE_LZMA -DHAVE_MEMORY_H -DHAVE_PKCRYPT -DHAVE_STDBOOL_H -DHAVE_STDINT_H -DHAVE_STRINGS_H -DHAVE_STRING_H -DHAVE_WZAES -DHAVE_ZLIB -DLZMA_API_STATIC -DMZ_EXPORTS -D_POSIX_C_SOURCE=200112L -I/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9 -I/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/lib/liblzma -I/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/lib/liblzma/api -I/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/lib/liblzma/check -I/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/lib/liblzma/common -I/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/lib/liblzma/lz -I/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/lib/liblzma/lzma -I/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/lib/liblzma/rangecoder   -DNDEBUG -march=native -mtune=native -O2 -pipe -fPIC   -W -Wall -std=gnu99 -o CMakeFiles/minizip.dir/mz_crypt_openssl.c.o -c /var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/mz_crypt_openssl.c
/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/mz_crypt_openssl.c:313:16: error: field ‘ctx’ has incomplete type
     HMAC_CTX   ctx;
                ^~~
/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/mz_crypt_openssl.c: In function ‘mz_crypt_hmac_reset’:
/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/mz_crypt_openssl.c:325:5: warning: implicit declaration of function ‘HMAC_CTX_cleanup’; did you mean ‘HMAC_CTX_get_md’? [-Wimplicit-function-declaration]
     HMAC_CTX_cleanup(&hmac->ctx);
     ^~~~~~~~~~~~~~~~
     HMAC_CTX_get_md
/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/mz_crypt_openssl.c: In function ‘mz_crypt_hmac_init’:
/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/mz_crypt_openssl.c:347:5: warning: ‘HMAC_Init’ is deprecated [-Wdeprecated-declarations]
     result = HMAC_Init(&hmac->ctx, key, key_length, evp_md);
     ^~~~~~
In file included from /usr/include/openssl/opensslconf.h:10,
                 from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from /var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9/mz_crypt_openssl.c:15:
/usr/include/openssl/hmac.h:30:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur int HMAC_Init(HMAC_CTX *ctx, const void *key, int len,
 ^~~~~~~~~~~~~~~~~~
make[2]: *** [CMakeFiles/minizip.dir/build.make:232: CMakeFiles/minizip.dir/mz_crypt_openssl.c.o] Error 1
make[2]: Leaving directory '/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9-abi_x86_64.amd64'
make[1]: *** [CMakeFiles/Makefile2:76: CMakeFiles/minizip.dir/all] Error 2
make[1]: Leaving directory '/var/tmp/portage/sys-libs/minizip-2.8.9/work/minizip-2.8.9-abi_x86_64.amd64'
make: *** [Makefile:130: all] Error 2